21401410

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1543}}^1$

素因数の和:1642

約数の個数: 32

約数和(自身を含む): 41132160

約数和(自身を除く): 19730750

約数列:

[1, 2, 5, 10, 19, 38, 73, 95, 146, 190, 365, 730, 1387, 1543, 2774, 3086, 6935, 7715, 13870, 15430, 29317, 58634, 112639, 146585, 225278, 293170, 563195, 1126390, 2140141, 4280282, 10700705, 21401410]

約数ペア:

[(1, 21401410), (2, 10700705), (5, 4280282), (10, 2140141), (19, 1126390), (38, 563195), (73, 293170), (95, 225278), (146, 146585), (190, 112639), (365, 58634), (730, 29317), (1387, 15430), (1543, 13870), (2774, 7715), (3086, 6935)]